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US 12,119,451 B2Granted
Capacity compensating electrolyte with sulfite solvent for lithium ion batteries with silicon-based anodes
AssigneeApple Inc.
InventorsKai Yan, Wei Zhou, Peng Lu, Tsuyonobu Hatazawa
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Abstract
An electrochemical cell for a lithium ion battery has an anode comprising a silicon-based active material, a cathode comprising a cathode active material, and a capacity compensating electrolyte comprising a linear sulfite-based solvent and a lithium imide salt. A molar ratio of the lithium imide salt to the linear sulfite-based solvent is between 1:5 and 1:1.
Claims15
An electrochemical cell, comprising:
- an anode comprising a silicon-based active material;
- a cathode comprising a cathode active material;
- and
- an electrolyte comprising only a linear sulfite-based solvent and a lithium imide salt.
1 more element
An electrochemical cell, comprising:
- an anode comprising a silicon-based active material;
- a cathode comprising a cathode active material;
- and
- an electrolyte comprising only dimethyl sulfite as a solvent, at least one lithium imide salt, and optionally independently, an additive and a diluent.
1 more element
An electrochemical cell, comprising:
- an anode comprising a silicon-based active material;
- a cathode comprising a cathode active material;
- and
- an electrolyte comprising only a linear sulfite-based solvent and a lithium imide salt, wherein a molar ratio of the lithium imide salt to the linear sulfite-based solvent is between 1:5 and 1:1.
1 more element
Dependencies are inferred from the claim text.